Vehicle-jack.



MoELMER STEWART.

VEHICLE JAGK.

APPLIUATION FILED JUNE 21, 1913.

2 SHBETSSHEET 1.

COLUMBIA PLANOGRAPH c0.. WASHIN c,

Patented No 11, 1913.

M'OBLMER STEWART.

, VEHICLE JACK.

APPLICATION FILED JUNE 21, 1913.

Patented Nov. 11,1913.

2 SHEETS-SHEET 2.

live! TED TAWENT curios.

MGELMER STEWART, OF KANSAS CITY, MISSOURI.

VEHICLE-JACK.

Patented Nov. 11, 1913. Serial No. 775,063.'

To all whom it may concern. I

Be it known that I, MGELMER STEWART, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Vehicle-Jacks, of which the following is a specification.

This invention relates to vehicle jacks, and one object of the same is to produce an apparatus of this character. in which the vehicle, such as an automobile, will, on riding onto the jack frame, automatically operate the jack to engage the vehicle frame and lift the same so as to remove the weight-of the vehicle from the Wheels.

Another object in view is to provide an apparatus which will be simple in operation and adjustable in its parts, and upon which the vehicle may be run from either direction. 1 With these objects in View, my invention:

comprises certain novel and peculiar features of construction and combination of parts, all as will hereinafter be described and;

claimed; and in order to afford a full and complete understanding thereof, reference will be made to the accompanying drawings. forming a part of this specification, and in' which Figure 1, is a plan view of the apparatus Fig. 2, 1s a side View of the same in raised; positlon. F1g. 3, 1s an enlarged vertlcal section along the line III-III of Fig. 2;

but showing the relation of the'parts when a circular track 8 which is anchored in the ground or floor of a garage,'and provided with suit-able brace rods 10 connecting the. track with a central block 12, upon which is also pivoted at 11 the middle cross channel t of the supporting frame. This track con-l struction adapts the jack for receiving the vehicle and allowing the same to be run 01f the jack in any desired direction.

The jack frame proper is a longitudinally: rolling frame adapted to. be automatically} I operated by the vehicle riding thereover, and

comprises a pair of side bars 14 of angle iron, which are joined together. near their opposite ends by yokes 16, the inner faces of which are provided wit-h hubs 18 for journaling-shafts 2O connecting the pairs of yokes at each end of the jack frame. The yokes are held toward each other so as to engage said shafts by means of a pair of turnbuckle rods 22 extending diagonally of the jack frame and secured to lugs 24 formed upon said hubs. Within the yokes are mounted gears 26 which are adapted to operatively engage with racks 28 provided in the underlying portions of the tracks 2. These gears 26 are rotatably' mounted Within the yokes by means of pins 30 carried by the yokes, each pin passing through one of a serles of'openmgs 32 lnthe gears provided for saidplns. These openlngs 32 are arranged at different distances fi'omthe center of the" gear in order to provide for varymg degrees the same to the different degrees of. lift required of the jack. I For example,'in the case of eccentric movement of the .gearto adapt of. motor cars having one axle higherv than I the other, one ofthe pairs-of gears will be adjusted by-the means of said openings to exert a greater lift than the other pair of saidgears, An adjustablebrackets-3st is also carried by each yoke 16in order that the j ack shall be adapted for vehicles of differ ent heights of axles. These brackets have vertical toothed arms to engage correspondingly toothed portionson the yokes, the ad justment being accomplished by meansfof a. slot 38 andbolt 40 provided in connection with each bracket. p n For carrying. the parts which are to engage the front axle of the YBlllClG, each shaft 20 is provided with a pivoted arm'42 having abifurcated portion at one end which is held in engagement with the shaft by a bolt 44. Each of these arms 42 has mounted thereon an axle engaging bracket 46 which is pivoted by means of a bolt 4-8 so that the bracket may be supported in vertical position for engaging the axle of the vehicle or in horizontal position in case it is desired to run the vehicle on to the J 5 end of the arm 42. This block is forv the purpose of engaging and supporting the front axle of the vehicle at its mldpoint,

as in the case of motor. cars in which the n 7 space adjacent the wheels is too limited to' r allow the use of the brackets 84: for supporting the ends of the axle. I

Itwill now be understood that as the vehicle moves onto the jack, its front axle en- "gages one ofthe brackets and moves the same forward, or toward the end of the jack frame, thereby drawing the jack frame Since these gears are all mounted eccentri'cally, theirf axes are, as a consequence, moved upward, which results in elevating the jack frame so, that the brackets '34, or at-any'rate -the rearf brackets 34 and the front block 68if the;

latter is in iuseare moved intoengagement i with the axles of the vehicle, thereby lift- .ing the vehicle with its wheels 'suspendedi f from the ground. As the frame advances,

the arms .42 are also advanced and the lat-1 .ter are provided [with lugs 74 which en-i gage. with sliding latches 7 6 mounted" forward upon the gears 26,

posts T8 at the ends ofthe apparatus.

gaged', the arms are held against casual diSenigagiament and consequent lowering of .1 "the jalck in either direction. W'henthe jack o 'ji s 'to fbef'lowered," this :niay be accomplished 4Q by depressing: a lever 80 at either end of the jack to lower the corresponding latch,

--where upon the jack may be lowered by a. movem'e'nt of the frame in the direction of itlratlendfof the jack, it beinggunderstood,

i;o f course, that if this should be in the same direction asthat in which, .the vehicle moved on the frame, the bracket 46 which was en- :gaged 'by 'the vehicle mnst'be moved out of v jveiftical 'position to allow the.- vehicle tov pass offthe jack.

that I have provided a'simpleand'efiicient apparatus for carrying out the objects of my invention, and while'the preferred form ,55 of the same-*has been illustrated-and described, I desire to be understood as reserving the right'to all changes and modifications falling within the spirit and scope of the appended claims. f

I.claim v V 1. In .a vehicle jack, a track mounted to 7 turn about I a'vertical axis, a vehicle supporting frame carried by said track, and means adapted to be operated by a vehicle moving oversaid frame for-imparting verti- V v The rear arm 42 moves so asito bring its" lug 7 f lip-against the rear'of the rear latchi 76, while the lug 74 on jthe forward arm moves .over the forward latch anddrops in? front-:ofthe same. With the lugs so enments mounted on said frame for engagement with the axles of the vehicle.

lifting the frame upon longitudinal movement to the frame or into inoperative posi- -tio-n,-and'meansconnected with said bracket ,cal movement to said frame to jack said vehicle. I

2.'In a vehicle jack, a track, a vehicle supporting frame above said track and provided with rotary elements eccentric-ally 7Q mounted thereon and adapted to travel on said track, and means adapted to be engaged by a vehicle moving over said frame to move the frame and rotate said elements, whereby said frame will be lifted to jack the ve- 75 hicle.

3. In a vehicle jack, a track provided with a set of racks, a vehicle supporting frame above said track and provided with a set of gears eccentrically mounted thereon and adapted to travel on said track and engage said racks, and means adapted to be engaged by a vehicle moving over said frame to move the frame and rotate said elements, whereby said frame will be lifted to jack 35 the vehicle.

4. In a vehicle jack, a track provided with a locking mechanism, a vehicle supporting frame above said track and provided with a set of rotary elements eccentrically mounted thereon and adapted to travel on said track, and means adapted to be engaged by a vehicle moving over said frame to move the frame and rotate said elements whereby the frame will be lifted to ack the vehicle, said means being provided with a catch for engaging said locking mechanism for locking the jack in raised position. A

' 5 In a vehicle jack, a track, a vehicle supporting frame :abo-vesaid track, means interposed between said track and frame for l fting the frame upon longitudinal movement thereof, and vertically adjustable ele- 6. In avehicle ack, a track, a vehicle supporting frame above said track, means interposed between said ;track and frame for ment thereof, and a bracket carried within the frame and movable into vertical :position for engagement by the vehicle when moving thereover to impart longitudinal movep} ment to the frame or into horizontal inop- From the roregoing it will be apparent "frame and movable into operative position for engagement by a vehicle axle whenmoving thereon to impart longitudinal movefor engagement with a fixed part of the jack for locking said frame in lifted posi- ;tion.

S. In a vehicle jack, a track,a vehicle supporting frame above said track, means interposed between said track and frame for lifting the frame upon longitudinal movement of the frame, means carried by said frame for engaging one of the axles of the vehicle near its ends, means also carried by said frame for engaging the mid-point of the other axle of the vehicle, and means for locking said frame in lifted position.

9. In a vehicle jack, a vehicle supporting frame, a device carried by said frame in position to be engaged by a vehicle in passing over the frame, and means actuated by the movement of the vehicle after engagement with said device for imparting vertical movement to said frame to jack the vehicle.

10. In a vehicle jack, a track, a vehicle supporting frame above said track and provided with rotary elements, eccentrically mounted thereon and adapted to travel on said track, means permitting the adjustment of said rollers on said frame to vary their eccentric movement, and means adapted to be engaged by a vehicle moving over said frame to move the frame and rotate said elements whereby said frame will be lifted to jack the vehicle.

In testimony whereof, I affix my signature, in the presence of two witnesses.

MCELMER STEWART.

Witnesses:

CHAS. W. GERARD, G. Y. THORPE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

